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Represents the multiplier used for the calculation of payment to be made in the event of death of employee.

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No definition available.

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Represents the multiplier used for the calculation of payment to be made in the event of disability to employee.

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No definition available.

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Represents the number of employees covered under employment agreement.

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Represents the amount of outstanding loan commitments and approvals to fund loans.

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No definition available.

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Tenant Improvement Obligations, Assets Held For Sale

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Carrying value as of the balance sheet date of obligations incurred and payable for statutory payroll taxes incurred through that date and withheld from employees pertaining to services received from them, including entity's matching share of the employees FICA taxes and contributions to the state and federal unemployment insurance programs.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property by the lessor or lessee, respectively.

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Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

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Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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No definition available.

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Amount of cash outflow reducing loss contingency liability.

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Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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COMMITMENTS AND CONTINGENCIES - Narrative (Details)	1 Months Ended		3 Months Ended		9 Months Ended
COMMITMENTS AND CONTINGENCIES - Narrative (Details)	Aug. 31, 2017 USD ($)	Jan. 31, 2016 shares	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) officer	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Commitments and contingencies
Outstanding loan commitments to fund loans			$ 20,864,000		$ 20,864,000
Future obligations under leases to fund tenant improvements and other future construction obligation			20,799,000		20,799,000
Future obligations under leases to fund tenant improvements and other future construction obligation related to assets held for sale			2,445,000		2,445,000
Restricted cash			25,375,000		25,375,000		$ 32,160,000
Penalties, interest and legal fees recorded in transaction costs			242,000	$ 53,000	11,870,000	$ 320,000
Ground Lease, Property One
Commitments and contingencies
Rent expense			292,000	438,000	1,168,000	1,314,000
Straight line rent liability							$ 13,289,000
Office Space in Dallas, Texas
Commitments and contingencies
Rent expense			$ 54,000	57,000	$ 166,000	171,000
Employment agreements \| Executive Officers
Commitments and contingencies
Number of officers covered under employment agreement \| officer					2
Multiplier used for the calculation of payments in the event of death of employee			2		2
Multiplier used for the calculation of payments in the event of disability to employee			1		1
Employment agreements \| Executive Officers \| 2015 Equity Incentive Plan
Commitments and contingencies
Shares of common stock issued under incentive plan (in shares) \| shares		76,423
Accrued payroll taxes								$ 444,000
Stock-based compensation expense			$ 0	$ 0	$ 0	$ 0
Unrecognized compensation expense			0		0
Restricted Cash for Tenant Improvements
Commitments and contingencies
Restricted cash			11,102,000		$ 11,102,000
City and County of San Francisco Real Property Transfer Tax Case \| Pending Litigation
Commitments and contingencies
Payment for penalties, interest and legal fees	$ 11,845,000
Penalties, interest and legal fees recorded in transaction costs			$ 253,000